asyncrat | 21ce45bf74febeeb420e9b63283c5ef6840463692adc17ac92e722b1a0dd149f

Analysis

max time kernel
149s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2024 17:11

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General

Target

Cc Combo.exe
Size

232KB
MD5

e074dece1afd2a20f7e479a8319a7857
SHA1

9f8ae4d5373955498cb15d1b75f190e105f23186
SHA256

cdcfe612d9253b3104b432ff622a9f7a4271059eb3ded0b2f056be9d9950d78f
SHA512

5f232ed6f0dc29d913571614b39e353ea08941dde9ec07ca7925a5de17b97b1526e4f548421f703677a3b19babb4bc00310966e31f2a0bad02ff4bfa97b2a2a0
SSDEEP

6144:DDubaBBOBIIj6HLLYLCYJqvc1DegW1Db/Q/HbMhQLYiUJiz1o/65:GbaVgibWJLYxJem/6

Score

10^/10

asyncrat stormkitty default credential_access discovery persistence privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot7014456621:AAE7BXbm_jQfLpnUdyLpTUwGXyLN5AXvThw/sendMessage?chat_id=7389740990

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/1336-1-0x00000000009A0000-0x00000000009E0000-memory.dmp	family_stormkitty

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Cc Combo.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Cc Combo.exe
File opened for modification	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Cc Combo.exe
File opened for modification	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Cc Combo.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
23	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Cc Combo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
772	cmd.exe
4740	netsh.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Cc Combo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Cc Combo.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3588	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe
1336	Cc Combo.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	Cc Combo.exe
Token: SeDebugPrivilege	1336	Cc Combo.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 772	1336	Cc Combo.exe	92
PID 1336 wrote to memory of 772	1336	Cc Combo.exe	92
PID 1336 wrote to memory of 772	1336	Cc Combo.exe	92
PID 772 wrote to memory of 800	772	cmd.exe	94
PID 772 wrote to memory of 800	772	cmd.exe	94
PID 772 wrote to memory of 800	772	cmd.exe	94
PID 772 wrote to memory of 4740	772	cmd.exe	95
PID 772 wrote to memory of 4740	772	cmd.exe	95
PID 772 wrote to memory of 4740	772	cmd.exe	95
PID 772 wrote to memory of 2632	772	cmd.exe	96
PID 772 wrote to memory of 2632	772	cmd.exe	96
PID 772 wrote to memory of 2632	772	cmd.exe	96
PID 1336 wrote to memory of 4372	1336	Cc Combo.exe	97
PID 1336 wrote to memory of 4372	1336	Cc Combo.exe	97
PID 1336 wrote to memory of 4372	1336	Cc Combo.exe	97
PID 4372 wrote to memory of 2192	4372	cmd.exe	99
PID 4372 wrote to memory of 2192	4372	cmd.exe	99
PID 4372 wrote to memory of 2192	4372	cmd.exe	99
PID 4372 wrote to memory of 4696	4372	cmd.exe	100
PID 4372 wrote to memory of 4696	4372	cmd.exe	100
PID 4372 wrote to memory of 4696	4372	cmd.exe	100
PID 1336 wrote to memory of 3588	1336	Cc Combo.exe	103
PID 1336 wrote to memory of 3588	1336	Cc Combo.exe	103
PID 1336 wrote to memory of 3588	1336	Cc Combo.exe	103

C:\Users\Admin\AppData\Local\Temp\Cc Combo.exe
"C:\Users\Admin\AppData\Local\Temp\Cc Combo.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:772
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:800
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:4740
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4372
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2192
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4696
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\Cc Combo.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\45a769388131b1d97f06db9089482889\Admin@ODZKDRGV_en-US\System\Process.txt

Filesize
4KB

MD5
2f62fa34224413249430e48baab8974a

SHA1
799f1fe91e363c52c2fdbd4270e0ff3b6839e7e6

SHA256
a723b2b254d1986230d58cd3b0acd9706981f4e5751c4bd0a66ced936fd7c681

SHA512
eb9776243278e482f3a8f0cc5053e3c0f23828c538375bc0c2a3487a1db93f8d12f96d5bc066a72d7bab420813d6dcc953c1756fe4d1012caca45623af997a5c

Download Submit
C:\Users\Admin\AppData\Local\b0af4a191a0ea7e22a5ad448956ad2ad\msgid.dat

Filesize
2B

MD5
d645920e395fedad7bbbed0eca3fe2e0

SHA1
af3e133428b9e25c55bc59fe534248e6a0c0f17b

SHA256
d59eced1ded07f84c145592f65bdf854358e009c5cd705f5215bf18697fed103

SHA512
5e108bc2842d7716815913af0b3d5cb59563fa9116f71b9a17b37d6d445fe778a071b6abcf9b1c5bac2be00800c74e29d69774a66570908d5ea848dcc0abfa76

Download Submit
memory/1336-4-0x0000000006250000-0x00000000067F4000-memory.dmp

Filesize
5.6MB

Download
memory/1336-0-0x0000000074C8E000-0x0000000074C8F000-memory.dmp

Filesize
4KB

Download
memory/1336-5-0x0000000005D80000-0x0000000005E12000-memory.dmp

Filesize
584KB

Download
memory/1336-3-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/1336-2-0x0000000005380000-0x00000000053E6000-memory.dmp

Filesize
408KB

Download
memory/1336-152-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/1336-154-0x0000000074C8E000-0x0000000074C8F000-memory.dmp

Filesize
4KB

Download
memory/1336-157-0x00000000069B0000-0x00000000069BA000-memory.dmp

Filesize
40KB

Download
memory/1336-158-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download
memory/1336-1-0x00000000009A0000-0x00000000009E0000-memory.dmp

Filesize
256KB

Download
memory/1336-164-0x00000000071C0000-0x00000000071D2000-memory.dmp

Filesize
72KB

Download
memory/1336-189-0x0000000007D70000-0x0000000007D7A000-memory.dmp

Filesize
40KB

Download
memory/1336-190-0x0000000074C80000-0x0000000075430000-memory.dmp

Filesize
7.7MB

Download